I had one black cat given to me at Halloween. Do Not, repeat, Do Not accept a black cat at Halloween. Her name was DC, and I bet I don't even need to tell you what that stood for. Oh, the things that furbaby got into. Unfortunately allergies got worse and worse until DC had to go to a new home. Kids are grown, cat allergies not a problem, but we got a dog, which I am allergic to!!! Which means that my husband has to clean up after her. Isn't that a shame !!!!
(DC = D**n Cat, and it wasn't always darn. )

Well it sounds like your new little boy is comfortable with his new home. Congratulations, give him lots of love and he will repay you two fold. The right name will come to you once you get to know him.